Boofina tile machine



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G. KREBS 80 A. WEI-L. ROOFING TILE MACHINE Patented Dec. 22, 1896.

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' G. KREBS 8a A. WEIL.

ROOFING TILE MACHINE.-

No. 573,604. Patented Dec. 22, 1896.

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ROOFING TILE MAOHINEf Patented Dec. 22,1896.

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UNITED STATES PATENT OFFICE.

GUSTAV KREBS, OF HALLE-ON-THE-SAALE, AND ABRAHAM VVEIL, OF

STEINHEIM, GERMANY.

ROOFING-TILE MACHINE.

SPECIFICATION forming part of Letters Patent No. 5'? 3,604, datedDecember 22, 1896.

Application filed March 22, 1895. Serial No. 542,850. (No model.)Patented in Switzerland November 30, 1894, No. 9,643-

To all whom it may concern.-

Be it known that we, GUSTAV KREBS, fabric-ant, of Halle-on-the-Saale,and ABRAHAM \VEIL, merchant, of Steinheim, in the Kingdom of Prussia,German Empire, have invented certain new and useful Improvements inMachines for Manufacturing Roofing-Tiles, (for which Letters Patent weregranted us in Switzerland, No. 9,643, dated November 30, 1894,) of whichthe following is a specification.

This invention relates to a press for the manufacture of a roofing-tileof any desired shape, having upper and lower overlapping ledges,whichare furnished, respectively, with depressions or a groove and withelevations or projections, so that a mutual tenon-andmortise joint isformed between adjacent tiles when placed upon the roof.

To enable this invention to be fully understood, we will describe how itcan be carried into practice by reference to the accompanying drawings,in which- Figure 1 is a longitudinal section of a machine or pressconstructed according to this invention for manufacturing our improvedtile. Fig. 2 is a side elevation of Fig. 1,1001:-

, ing in the direction of the arrow A. Fig. 3

is a plan view showing the arrangement by means of which the depressionsor grooves in the lower overlapping ledges are made; and Fig. 4 is alongitudinal section of Fig. 3, taken on the line 3 5. Fig. 5 shows thepress in plan, and Fig. 6 the molding-plate in perspective plan view.

The press is constructed as follows: On the working-table 14, consistingof a hollow casting, is a frame 15, which corresponds to the outsidedimensions of the roofing-tile, and in this is fixed the box-shaped mold16. The upper side of this mold has at one corner 17 a depression inwhich the nose of the roofingtile is formed, and on the two oppositelongitudinal sides are furrow-like depressions 18 19, in which isadjustably placed, 'so as to move in the diagonal direction 20, a frame21 with teeth 21. This frame consists of two plates 22, which are guidedin corresponding grooves in the mold, so that the frame 21 is compelledto run in a particular direction. The plates 22 are connected below themold with rods 23, which are guided by longitudinal slits 24 in the mold16 and which traverse the lateral walls of the same, as well as those ofthe frame 15, and they are connected at their ends by a stirrup 25. 'Inthe table 14 is mounted a forked lever 27, provided with a handle 26,which lever encircles the stirrup 25. (See Figs. 1, 3, and 4.)

In the table 14 there is further an ejecting mechanism, which consistsof a thrusting-rod 29, guided in the table-top and in the crosspiece 28,and of a cross 30, which is rigidly connected to the thrusting-rod. Thecross 30 is provided with rods 31, which are guided in the mold 16. Themotion of this ejecting mechanism is brought about by the treadlelever33, which is arranged to turn on the pivot 32, and by the lever 34,which is jointed on the one hand to the treadle-lever and on the otherto the thrusting-rod 29.

On the mold 16 is placed a metal templet 35, (see Fig. 6,) which exactlycorresponds to the lower surface of the tile. This templet is furnishedwith oblong depressions 36, which correspond with the ribs on theroofing-tile,

and there are furthermore formed in the vertical walls 37 of theangle-piece the recesses 38, through which pass the teeth 21 of theframe 21 to form depressions in the overlapping ledges of the tile, inwhich fit the teeth formed in the overlapping ledges of the adjacenttile when placed upon the roof. The corner 39, which serves for theformation of the nose of the tile, is correspondingly angled, as shown.

On the sides of the table 14 are brackets 40, upon which are fixedbearers 41. They carry guiding-rods 42, upon which a bridge 43 ismounted and travels. This bridge carries a funnel 44, substantially inthe form shown in Fig. 5, for containing the cement or other materialout of which the tile is formed and the mechanism required for theformation of the teeth on the upper overlapping ledges of the tile.

The mechanism for forming the teeth consists, essentially, of thefollowing parts: The funnel 44 is provided with lugs 45, in which areadjustably mounted the screws 46. The latter carry a triangular plate47, which is furnished with a lug 48 on the two sides on which it comesinto contact with the funnel 44. To the plate 47 there is secured by itshead 50 a screw 49, which is arranged to screw up and down in the bridge43. The end of this screw is connectedto a double crank 51. There are,furthermore, oblong slots 52 in the plate 47, in which slots the screws54, connected with a second triangular plate 53, are mounted and travel.The plate 53, which comes to lie against the edge 48 of the plate 47, isfurnished with recesses 55011 the sides on which it applies itself tothe funnel 44, and these correspond to the teeth which are formed on theupper overlapping ledges of the tile. The plate 53 is, moreover,connected by a joint with the plate 47 by means of a lever 57, whichserves as a handle, and pivots at 56 on the plate 47, so that when thelever 57 is moved in the direction of the arrow A the plate 53 isshifted in the direction of the arrow 58, that is to say, the plates 53and 47 shift with relation to each other, and that to such an extentthat the outer front surfaces of the plate 53, which lie against thefunnel, are intercepted by the outer front surfaces of the edge 48 insuch a way that it is not possible for the plate 53 to be released bythe edge 48. The plates 47 and 53, with their screws and levers, arecapable of being moved up and down within certain limits by means of thescrew 49.

The inner sides of the funnel 44 are formed by a fiat bar of wroughtiron or steel, which is screwed on and is sharpened below and comes intocontact with the edge 48 and forms a cut-off with the latter on thelower side when the plates 47 and 53 have reached their lowest position.

The lower part of the funnel 44 is provided with a ledge 60, on whichslides a cutter 61, conforming to the outline of the funnel, its edgeextending to the sharpened knife-like bar 59 when in closed position.The shifting of this knife is effected by means of the lever 03, pivotedat (52. \Vhen the whole apparatus is screwed up to such a point (for theformation of the teeth of the tile) that the lower surface of the plate63 lies in the same plane with the upper surface of the edge 60, thebridge 43, with the funnel 44, and the whole mechanism concerned in theformat-ion of the teeth can be shifted in the direction of the arrow Ato such an extent that the whole of the tile thus formed is exposed.

The motion of the press is as follows: The funnel, together with thewhole of the parts concerned in the formation of the furrows, is shiftedin the direction of the arrow A so far that the bed 16 is completelyexposed and the toothed frame 21 is brought to the deadthe funnel coversthe spot at which the furrow is to be formed. The plates 47 and 53 aremoved downward by means of the screw 49 to the upper level of the cement64 and the plate 53 pushed against the funnel by means of the lever 57as far as is permitted by the slot 52 and screws 54. \Vhen this has beendone, the funnel 44 is filled up with material and the latter rammeddown, after which the knife 61 is thrust into the mouth of the funnel bymeans of the lever 63 and the excess of material separated from theformed overlapping ledges. During this process the tooth-like lugs onthe overlapping ledges are formed at the same time as the upperoverlapping ledges themselves. In order that the finished tile and thetemplet may be ejected, the plate 53 is shifted in the direction of thearrow 58 by means of the lever 57 and screwed up to its highestposition, as far as the plate 47, by means of the screw 49, and thewhole mechanism, together with the funnel, being shifted in thedirection of the arrow A. The frame 21 is then brought to the dead-pointby means of the lever 26 27 and the tile ejected by the ejecting mechanism. If another tile is to be made, another form-plate is introduced andthe process repeated in the same way.

The inner wall of the funnel 44 must be sharpened like a knife, andsince cast-iron of so small a cross-section has not sufficient resistingpower the inner wall of the funnel is removed and replaced by a steel orcast-iron bar 59, which is sharpened like a knife.

\Vhat we claim, and desire to secure byLetters Patent of the UnitedStates, is-- 1. A press for the manufacture of roofingtiles, comprisingmeans for forming the depressions in the lower overlapping ledges, ofthe tile which consists of a bed sunk in a suitable frame conforming tothe outline of the tile, a second frame fitting adjust-ably in recessesformed for it in the bed and means eonsistin g of athrusting-rod,stirrupoand lever formovin g the second frame, said framebeing also provided with guide-plates and teeth, and of a mold-platewhich covers the bed and is furnished with angles for the overlappingledges and the nose of the tile together with recesses formed in theangles of the same, so that after the cement has been placed upon themold-plate the teeth of the frame are pressed into the formedoverlapping ledges of the tile and the depressions in the latterproduced, substantially as shown and described.

2. In a press for the manufacture of tiles comprising suitable means forforming the upper and lower overlapping ledges of the tile, and suitablemeans for forming tooth-like lugs on the upper ledges, consisting of afunnel adapted to be shifted upon guide-rods, a plate adapted to beshifted vertically, and a second plate having a sliding connection withthe first plate and adapted to be moved by a lever, said plate beingprovided on the sides adjacent to the funnel with recesses corre IIOover the mold-frame for forming the upper overlapping ledges and theteeth therein, substantially as shown and described.

In witness whereof we have hereunto set 15 our hands in presence of twowitnesses.

GUSTAV KREBS. ABRAHAM WEIL. lVitnesses:

PAUL SOLMENS, ADOLF FLEVROS.

